Northern Airborne Technology RS16 User Manual

Part of

SM15

RS16 SERIES

REMOTE SWITCH

INSTALLATION AND OPERATION MANUAL

REV 4.00 November 24, 2003

Northern Airborne Technology Ltd.

1925 Kirschner Road

Kelowna BC, Canada

V1Y 4N7

Telephone [phone]

Facsimile [phone]

Copyright 2003 by Northern Airborne Technology

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

SM15 Rev. 4.00 RS16 Series Remote Switch Manual

Periodically NAT will release manual amendments. In order to maintain the most
accurate and up to date manual these amendments should be carried out immediately
upon receipt and recorded on the following amendment record.

AMENDMENT RECORD

Amendment

Number

Amendment

Date

Section(s)

Changed

Date

Entered

Entered By

Insert any Amendment Instruction sheets after this page.

Nov 24,2003 Page ii

ENG-FORM: 820-0109.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

SM15 Rev. 4.00 RS16 Series Remote Switch Manual

Table of Contents

Section Title Page

1.0 Description

1. Introduction 1-1

1.2 Purpose Of Equipment 1-1

1.3 Features 1-1

1.4 Specifications 1-1

1.4.1 Electrical Specifications 1-1

1.4.2 Physical Specifications 1-2

1.4.3 Environmental Specifications 1-2

1.5 Unit Nomenclature 1-3

2.0 Installation

2.1 Introduction 2-1

2.2 Unpacking and Inspection 2-1

2.3 Installation Procedures 2-1

2.3.1 Warnings 2-1

2.3.2 Cautions 2-1

2.3.3 Cabling and Wiring 2-2

2.3.4 Fuses and Breakers 2-2

2.3.5 Post-Installation Checks 2-2

2.4 Continued Airworthiness 2-3

2.5 Installation Drawings 2-3

3.0 Operation

3.1 Introduction 3-1

3.2 General 3-1

3.2.1 Active Voltage Keying 3-1

3.2.2 Active Ground Keying 3-1

3.3 Limitations 3-1

3.4 Emergency Procedures 3-2

3.5 Performance 3-2

Nov 24,2003 Page iii

ENG-FORM: 820-0109.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

SM15 Rev. 4.00 RS16 Series Remote Switch Manual

Section 1.0 Description

1.1 Introduction

This manual contains information on the RS16 Series Remote Switch.

Information in this section consists of purpose of equipment, features and specifications.

1.2 Purpose of Equipment

The RS16 is a bulkhead mounted, user definable, remote switch used to switch sixteen
signals as one group or as individual groups of four. Dry nitrogen filled, gold contact,
sealed relays provide dry-circuit switching to 0.5A. It is suitable for use up to 35,000 feet.

1.3 Features

The RS16 is designed to switch up to sixteen navigational and/or audio signals. Each four­pole relay has its own status annunciation for fault monitoring. Each relay can be activated
by either voltage or ground keying, and has an independent ILS reversion logic switch.

Circuit boards are constructed of G10-FR (flame retardant) material, with solder masks
and reflowed tin plating; they are environmentally protected with conformal coating.

1.4 Specifications

1.4.1 Electrical Specifications

Operating voltages: +28 Vdc for each relay.

Current consumption: 20 mA / relay, 100 mA max for all (@ 28 Vdc).

Relay contacts: 0.5 A / contact max.

ILS source current: 0.1 A max.

1.4.2 Physical Specifications

Maximum dimensions, including flanges:

Height 1.20 inches (30.5 mm)

Depth 3.46 inches (87.9 mm)

Width 5.15 inches (130.8 mm)

Weight 0.44 lbs. (200g.)

Mounting Bulkhead

Activity annunciator: GREEN (RS16-101) or RED (RS16-102)

Nov 24, 2003 Page 1-1

ENG-FORM: 800-0106.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

RS16 Series Remote Switch Manual SM15 Rev. 4.00

1.4.3 Environmental Specifications

Operating Temperature -40°C to +70°C

Altitude 35,000 ft. max.

Humidity 95 % Non-Condensing

Shock 12 g. (any axis)

1.5 Unit Nomenclature

NOTE: The RS128 and RS192 families are derivative products that simply contain

multiple RS16 cards in a single enclosure. All performance characteristics and test
procedures are the same as those for the RS16.

Model Description / Distinction

RS16-001 16P2T data switch, GREEN annunciation. Can be mapped for voltage or

ground keying. ILS reversion relay.

RS16-101 16P2T data switch, card only (does NOT include enclosure), GREEN

annunciation. Can be mapped for voltage or ground keying. ILS reversion relay.

RS16-102 16P2T data switch, card only (does NOT include enclosure), RED annunciation.

Can be mapped for voltage or ground keying. ILS reversion relay.

RS128-000 Empty enclosure, allocated space for 8 RS16 cards. User may choose

combinations of RS16 cards.

RS128-008 Pre-filled with 8 RS16-101 cards for 128P2T operation.
Each RS16 card has an ILS reversion relay.

RS128-999 Pre-filled with 8 RS16-101 cards. Each RS16 card is hard-wire jumpered

to the normally closed position for each of the 16 contacts (relays
removed). Used to permit flight with the RS128-008 removed.

RS192-000 Empty enclosure, allocated space for 12 RS16 cards. User may choose

combinations of RS16 cards.

RS192-012 Pre-filled with 12 RS16-101 cards for 192P2T operation.
Each RS16 card has an ILS reversion relay.

RS192-999 Pre-filled with 12 RS16-101 cards. Each RS16 card is hard-wire jumpered

to the normally closed position for each of the 16 contacts (relays
removed). Used to permit flight with the RS192-008 removed.

End of section 1.0

Page 1-2 Nov 24, 2003

ENG-FORM: 800-0106.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

SM15 Rev. 4.00 RS16 Series Remote Switch Manual

Section 2.0 Installation

2.1 Introduction

Information in this section consists of: unpacking and inspection procedures, installation
procedures, post-installation checks, and installation drawings.

2.2 Unpacking and Inspection

Unpack the equipment carefully and locate the warranty card. Inspect the unit visually
for damage due to shipping and report all such claims immediately to the carrier
involved. Note that each unit should have the following:

- RS16 Series Remote Switch

- Warranty Card

- Release Certificate

Verify that all items are present before proceeding and report any shortage immediately
to your supplier.

Complete the warranty card information and send it to NAT when the installation is
complete. If you fail to complete the warranty card, the warranty will be activated on
date of shipment from NAT.

2.3 Installation Procedures

2.3.1 Warnings

Do not bundle any lines from this unit with transmitter coax lines. Do not bundle any
logic, audio, or DC power lines from this unit with 400 Hz synchro wiring or AC power
lines. Do not position this unit next to any device with a strong alternating magnetic
field such as an inverter or significant interference to operation will result. In all
installations, use shielded cable exactly as shown and ground as indicated.
Significant problems may result from not following these guidelines.

2.3.2 Cautions

Do not install the RS16 without making a suitable amendment to the flight manual
indicating how information transfer has been implemented in the aircraft.

Nov 24, 2003 Page 2-1

ENG-FORM: 805-0105.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

RS16 Series Remote Switch Manual SM15 Rev. 4.00

2.3.3 Cabling and Wiring

For shielded wire applications, use Tefzel Mil-M-27500 or Mil-M-81044 shielded wire
with solder sleeves (for shield terminations) to make the most compact and easy to
terminate interconnect. Follow the wiring diagrams in Section 2.5 as required.

Allow 3 inches from the end of the wire to the shield termination to allow the hood to be
easily installed. Note the hood is a ‘clamshell’ type, and is installed after the wiring is
complete.

Allow 3 inches from the end of the wire to the shield termination to allow the hood to be
easily installed. Note that the hood is a ‘clamshell’ hood, and is installed after the wiring
is complete.

All wiring should be at least 24 AWG, except power and ground lines which should be at
least 22 AWG. Ensure that all ground connections are clean and well secured.

Note that the maximum wire size accepted by the high density D-Subminiature
connector is 22 AWG.

2.3.4 External Switches and Lamps

Switches and or annunciators must be selected to suit the application. If all lines are
picked at once, a single pushbutton (alternate action) or toggle switch may be used to
supply the ALL KEY line. Note that a single switch/lamp assembly can replace the
transfer switch and annunciators. This should be a lighted pushbutton switch
(SPST/SPDT), with positive action (i.e., push on, push off), and two legends to match
the desired NAV functions.

If serving as audio key relays (for boom microphones, etc.), the unit can be triggered by
in-line drop cords or other methods that supply an input to the appropriate key line.

If serving as NAV selector, annunciator lights should be connected through one or
more relay contacts to ensure indication of actual relay positions.

Fuses or breakers should be 0.5 Amp max for all applications. See the installation
drawings in Section 2.5.

2.3.5 Post-Installation Checks

Before connecting the RS16, check for 28 Vdc and ground on each of the respective
lines in the harness (depending on your particular configuration). Refer to the
applicable installation drawing in Section 2.5.

Page 2-2 Nov 24, 2003

ENG-FORM: 805-0105.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

SM15 Rev. 4.00 RS16 Series Remote Switch Manual

2.4 Continued Airworthiness

Maintenance of this product is on condition only. Periodic maintenance of this product
is not required.

2.5 Installation Drawings

DRAWING REV. DESCRIPTION TYPE

RS16001\403 - Generic Installation Diagram Installation (Interconnect)

RS16001\403-2 A Active Voltage Keying Mode Installation (Interconnect)

RS16001\403-3 A Active Gnd Keying, ILS Reversion Function Installation (Interconnect)

RS16001\403-4 A Active Ground Keying Mode Installation (Interconnect)

RS16001\405 B RS16-001\ RS16-101\ RS16-102 Remote Switch Connector Map

RS192\900-0 1.00 Assembled Massive Array Switch Orthographic

RS16001\901-1 1.01 RS16-001 Assembled View

RS128\922-0 1.00 RS128 Massive Array Switch Chassis Mech. Installation

Section 2.0 ends after these drawings

Nov 24, 2003 Page 2-3

ENG-FORM: 805-0105.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

Confidential and Proprietary to NAT

Confidential and Proprietary to NAT

Confidential and Proprietary to NAT

Confidential and Proprietary to NAT

Confidential and Proprietary to NAT

Confidential and Proprietary to NAT

Confidential and Proprietary to NAT

Confidential and Proprietary to NAT

SM15 Rev. 4.00 RS16 Remote Switch Manual

Section 3.0 Operation

3.1 Introduction

Information in this section consists of the functional and operational procedures for the
RS16 Remote Switch.

3.2 General

This section only describes the basic operation of the RS16 series of remote switches
because the product is user definable in its applications. This section will describe the
two available keying methods. Please note that only one keying method can be used
on each RS16 board; however if the unit is a RS128 or a RS192 each of the individual
RS16 boards within can use a different keying method.

The RS16 has a total of five relays; one ILS reversion relay, and four user relays. The
four user relays will be referred to as the GROUP relays in the following descriptions.

If used for GPS/LORAN/VLF switching, the unit may have to be wired to return to the
VOR/ILS mode when the navigation receiver is channeled to an ILS frequency. Check
local aviation regulations regarding this requirement.

NOTE: ILS reversion mode is not applicable in Canada for NAV/GPS installations.

3.2.1 Active Voltage Keying

Refer to installation drawing number RS16001\403-2. In the active voltage keying mode
the coils of the GROUP relays are all grounded together by grounding pin 43. To key all
four relays at once apply 28 VDC to pin 21. To individually key each relay apply 28VDC
to pin 17, pin 18, pin 19, and/or pin 20 as required.

3.2.2 Active Ground Keying

Refer to installation drawing numbers RS16001\403-3 and RS16001\403-4. The
GROUP of relays is powered by providing 28 Vdc to pin 21. To key all four relays at
once ground pin 43. To individually key each relay ground pin 39, pin 40, pin 41, and/or
pin 42 as required. Drawing number RS16001\403-3 shows the ILS reversion function;
If pin 60 is grounded in an ILS reversion action the GROUP of relays become de­energized. This returns all the wipers to the N.C. (normally closed) contacts.

3.3 Limitations

The RS16 series remote switch imposes no limitations on the original airframe.

Nov 24, 2003 Page 3-1

ENG-FORM: 806-0104.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.

RS16 Remote Switch Manual SM15 Rev. 4.00

3.4 Emergency Procedures

The RS16 series remote switches do not affect the emergency procedures of the
aircraft. Flight personnel should be made aware of the function of the RS16, if it is used
to switch navigation signals.

3.5 Performance

The RS16 series remote switches do not affect the performance of the aircraft.

End of Section 3.0

Page 3-2 Nov 24, 2003

ENG-FORM: 806-0104.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.